Do you know the usual methods for checking the hardness of PCD tools? At present, diamond is more popular, mainly because of its relatively high strength. When it is used, it can greatly improve work efficiency. However, now there are various brands on the market, which has led to many unqualified products. Hardness will have problems, so it is necessary to master some testing methods.

The editor of Lanhe gives the following methods on PCD tool hardness testing methods:

  1. Introduction to PCD Reamer Chemical heat treatment is to make the surface of the workpiece infiltrate the atoms of one or several chemical elements, thereby changing the chemical composition, organization and performance of the surface of the workpiece. After quenching and low-temperature tempering, the surface of the workpiece has high hardness, wear resistance and contact fatigue strength, and the core of the workpiece has high strength and toughness.

  2. Surface quenching and tempering heat treatment method. Surface hardening and tempering heat treatment are usually carried out by induction heating or flame heating. The main technical parameters are surface hardness, local hardness and effective hardened layer depth. Hardness testing can use Vickers hardness tester, Rockwell or surface Rockwell hardness tester can also be used. The choice of test force (scale) is related to the effective hardened layer depth and the surface hardness of the workpiece.

  3. PCD tool hardness testing method: local heat treatment method. If the parts have higher local hardness requirements, they can be locally quenched and heat treated by induction heating, etc. Such parts are usually marked with the location of the local quenching heat treatment and the local hardness value on the drawing.

  The strength of PCD reamer is not too high to make the crystals not easy to break. The abrasive grains are polished during use, and the sharpness decreases, which leads to deterioration of tool performance. When the strength of diamond is not enough, it is easy to break after being impacted, and it is difficult to bear the heavy duty of cutting.

  The testing method of PCD tool hardness is very wet. It is necessary to know and understand. As far as the current market is concerned, there are various brands on the market, but there will be many unqualified products. If you don’t know the hardness of PCD tools Testing methods, if you are not sure that unqualified products will be picked by you, in short, it is not a bad thing to understand the testing methods of PCD tool hardness, on the contrary, it may help you when necessary.